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DV3A

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ID = 28528
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  Triode, vacuum   Universal 
  <1925 very rare. ***
Identical to DV3A
Similar Tubes
Normally replaceable-slightly different:
  C299 ; UV199
Other base:
  DL3_deForest ; DV3
First year 1925 ?? Saga of the Vacuumtube, Tyne Seite 301

Base UV199
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery =
Description

Base same as the UV199, but "Isolantite" (a type of ceramic). It was sold in a metal can. This tube was first made during 1925 but discontinued later in the same year. It was reintroduced late in 1927.

This tube has a bigger bulb than the UV199 and the elements are mounted horizontally to the base.

 
Dimensions (WHD)
incl. pins / tip
35 x 82 x mm / 1.38 x 3.23 x inch
Weight 27 g / 0.95 oz
Literature Saga of the Vacuumtube, Tyne   p.301 ff.
-- Collector info (Sammler)   
 
deforest_dv3a.jpg
DV3A: O.F.
Otto Frosinn

 
uv199_triode_tube~~2.gif
DV3A: Fin Stewart
Fin Stewart

 


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